That's a pretty good system but you need more and faster VRAM to be able to beat the PS4 in certain workloads. Whats also worrying is if games are also going to be using AMD APU accelerated physics massively therefore a tight integration between the cpu and gpu is better in the PS4's case. if I were you I would switch the cpu with the intel core i5-4670K and the gpu with an AMD radeon hd 7970 to absolutely kill the PS4.
Edit:PS4's pixel fillrate is a total beast matching the 7950.







